Suction device for negative pressure therapy



FIG. 1 is a perspective view of a suction device for negative pressure therapy showing our new design;

FIG. 2 is a top thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The broken lines depict portions of the suction device for negative pressure therapy that form no part of the claimed design. 

CLAIM The ornamental design for a suction device for negative pressure therapy, as shown and described. 